73740388 has 24 divisors (see below), whose sum is σ = 134379000. Its totient is φ = 35363328.

The previous prime is 73740377. The next prime is 73740389. The reversal of 73740388 is 88304737.

It can be written as a sum of positive squares in 4 ways, for example, as 1965604 + 71774784 = 1402^2 + 8472^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73740388.

It is not an unprimeable number, because it can be changed into a prime (73740389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16188 + ... + 20236.

It is an arithmetic number, because the mean of its divisors is an integer number (5599125).

Almost surely, 2^73740388 is an apocalyptic number.

It is an amenable number.

73740388 is a deficient number, since it is larger than the sum of its proper divisors (60638612).

73740388 is a wasteful number, since it uses less digits than its factorization.

73740388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239 (or 4237 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 73740388 is about 8587.2223681468. Note that the first 3 decimals coincide. The cubic root of 73740388 is about 419.3421068164.

The spelling of 73740388 in words is "seventy-three million, seven hundred forty thousand, three hundred eighty-eight".